Machine for shaping a tobacco mass



June 4, 1929. E. R. DAHLSTRM MACHINE FOR SHAPING A TOBACCO MASS Filed se t. 3, 1926 4 Sheets-Sheet 1.

June 4, 1929. E. R. DAHLSTRM MACHINE FOR SHAPING A TOBACCO MASS Filed Sept. 3,;1925 4 Sheets-Sheet 2 June 4, 1929. 'a R. DAHLSTRM .76.7

MACHINE FOR SHAPING A TOBACCO MASS Filed Sept. 3, 1926 4 Sheets-Sheet 5 Pic-3.5

{KPM/strana June 4, 1929. DAHLSTRM l,7l6,l'17

MACHINE FOR SHAPING A TOBACCO MASS Filed Sept. 3, 1926 4 Sheets-Sheet 4 Patented June 4, 1929.

UNITED STATES mam PATENT OFFICE.

ERNST RUBEN DAHLSTROM, or STOCKHOLM,-SWEDEN, ASSIGNOR TO AKTIEBOLAGET FoRMAToa, OF STOCKHOLM, SWEDEN, A CORPORATION.

MACHINE FOR SHAPING A'TOBACCO MASS.

Application filed September 3, 1926, serial No. 133, 190, and in sweden December 9, 1925.

This invention relates to machines, for shaping a tobacco mass, in which a quantity of tobacco is compressed in a receiver. The receiver consisting generally of a compression chamber and a movable piston is provided with an inlet opening in one of its walls be-' chamber does not enter into'the receiver- -bnt remains in or outside the opening after the coinpressing member, which moves along the wall in which the inlet opening is arranged, has passed the said opening during its working sti-oke.

The object of thepresent invention is to overcome such faulty operation,by providing` positive means for moving the tobacco through the inlet opening into the chamber of the rcceptacle before the piston is moved to compress the tobacco.

A further object of the invention is to provide one of the walls of the receptacle with a pivoted part which will close the inlet opening and when 'moved to closed position will force all the tobacco into the compression chamber.

In the annexed drawing are shown difl'erent enbodinents of the invention and in which:

F ig. 1 shows a front view of a machine of the above mentioned type in which the present invention is used. F ig. 2 shows a section along the line A-A in Fig. 2, and Fig. 3 is a section along the line B-B in Fig. 2. Figs. 4, 5 and 6 shows the device in three different working positions. Fig. 7 is a cross section of the receiver, the funnel and the piston along the line G-C in Fig. 5.

Figs. 8 and 9 show a cross section an d a vertical section respectively of another form of embodiment of the invention. F ig. 10 shows a third form of embodiment thereof.

In Figures 1 to 10, mounted on the frame 16 is the vertical receiver 1, which is open' at the to and the bottom and is provided with the in et opening 2 for the tobacco and with the piston 6.

According to Figs. 1 to 7, the inlet channel or funnel leading to the feedin opening is formed of an inclined front wa l or bottom 26 whichi s pivotally mounted on' its lower edge at. the receiverby meansof the ,pivots 27, and of'the two stationary walls 28 for-med on the receiver lwhich bear against each of the side edges of the inclined bottom 26 (see Fig. 3). The said bottom can be swung inwardly so as to wholly cover the feeding opening 2, so as to form a Shutter for the opening.

The Shutter is held in'its inclined open position shown in F ig. 2 by means of a. support 50 projecting from the frame 16 and which is provided at the top with a roller 51 bearing against a rib 52 or the like on the outside of the Shutter. i

The closing and o ening of the Shutter takes place automatica ly and in a determined relation to the movement of the other working partsof the machine, as will be seen from the followingdescription of the arrangement and operation of the machine.

Projectingfrom the side walls of the receiver 1 are pivots 7 and 8 and on each of said pivots there is mounted a double-armed level`9, 10. The level arms 10 are for-med with toothed segments at their upper free ends and the said toothed segments mesh with toothed segments `on arms 11 Secured-to a horizontal shaft 21 turnably mounted' in bearings 20 on the slide 14. Secured to the lower ends of the downwardly directed arms 9 of the levels 9, 10 is a knife 12. The side walls of the receiver are provided with eX- tensions 13 forming ears for screws or the like by means of which the receiver is se-' (-ured to the slide 14 which is slidably mounted on the vertical guide rods 15 which are connected to each other by means of the cross piece 17 carrying the piston 6, and are slidable in vertical guides in the frame 16.

The slide 14 is moved up and down by means of rods 18 which engage pivots 19 on the slide and which are driven up and down from a driving shaft 30 by means of the following device: Secured to the shaft 30 are cam disks 31 on which bear rollers 32 carried by arms 33 turnably Secured to the frame and the Swinging ends of which are turnably connected to the rods 18 by means of pivots 35.

The rods 15 and also the piston 6 are driven from cam disks 36 on the shaft 30 by means of arms 37 turnably Secured to the frame and bearing through the medium of rollers 38 i against ascam disk 41 onthe shaft 30-.

i According to Fig. 2-the piston takes `an upper positiomthe Shutter 26 is opened and the receiver 1 is filled with a certain.- number ofalready comp essedportions of-filler tobacco supplied through. the opening 2. The

line --designates the' upper surface-of the compressed tobacco' mass. Before the 'piston is-noved d ownwardsa further portion of filler tobaoco' lis .fedinto-the receiver. The

. outer or free surface e of the said:: portion is indicated by the line; 25. The 'receiver and the pistonare now moved downwar ds,- by which the Shutter 52 b'y its abutting. against the roller' l on-the support is caused to Swing inwards so that, when the partslave reached the position shown in Fig. 5, ?the shutter has: covered: the opening and caused the whole portion 54 to enter into the receiver. Beforethe receiver has reached itslowermost z position 2:(Fg. 5); the knife 12, which has formed a bottom for 'thereceiver, swings'from the position shown in Fig: 2 to that one shown in Fig. 5,- thus unco'vering the lower opening of the receiver; 'i

i Then the piston. continuesto move down relatively-to the. receiver to ,a predetermined levelso -asto compress the iportion last supplied and the tobacco mass already contained in' thereceiveragainst the'table 16.to.a'certain volume.- -Vhile the piston remains in the said lower position the receiver l moves upwards to the positionshown in Fig. 6 and also the knife is'simultaneously moved upwards but maintains during the said moveinent its swung-out position so that from the tobacco mass formed by the compressed tobacco portions a certain part corresponding to a desired filler is uncovered. As soon as the position shown in Fig. 6 is reachedthe knife 12 is swung inwards so as to cut off the saiduncovered part of the tobacco 'mass and to again form a bottom of the receiver` Then the receiver l and the piston 6 move together upwardsand immediately after theyghave reached the position shown in Fig. 2 the shutter is swung back to the oute' limit'position (Fig. 2) under the influence of the spring 64: which has been expanded during the positive closing of the shutter above described.

According to the 'orm of the invention shown in Figs; 8 and 9 the channel is in its entirety shaped &sa swingable shutter 60. The closing as well as the opening of the Shutter takes place positively when moving' the receive down and up by meansof a link 66 'which is pi votally connected to the Shutter and to the support 68 by means of the pivots and 67, respectively. In F ig. 8 the Shutter is closed and in Fig.l9the Shutter is open. In the form of theinvention in Fig. 10 no part of the channel or funnel proper is formed as a Shutter, but in this case the Shutter is turnably secured to the upper edge of the opening. The device is such that when the shutter is swung .(for'instance by meansof a roller 61 driven by a suitable device :and-cmoperating with a cam 62) 'from its upper. position shown in full lines to its closed position shown by dash and dotted lines, the Shutter forces the tobacco containedin the channel into the receiver; I. v

The receiver :may have suchcross-section shape,- that the compressed tobacco -will have the cross-sectional :fo'rmiof a cigar filler, as is shownJini'Figs: 3 and 7 or ;the form' of a so-called Cartridge which is of a size .to use in a pipe as inFigs. 8 and 9.' v

Commonto all of the described forms of the invention there is .arranged a Shutter in front of the inlet opening and said Shutter forms in -its closed position part of the wall of the receiver, and. bears tightly against the side sui-faces of the piston asit moves past the opening. p

The other wall part of the receiver which is situatedoppositethe inlet opening 2 may alsobe formed as ashutter which is closed and openedsimultaneously with the Shutter for the ;opening 2. Byi such means a greater space is obtained for the-tobacco quantity, which obviously facilitates the feeding of the tobacco and it isalso rendered possible feeding the tobacco through two or more openngs.

Instead of a spring 64, a Weight or any other equivalent means may be used.

What I claim as new and (lesire to secure by Letters Patent of the United States of America is l. In a machine for compressing and shapin a tobacco mass in correspondence. to the to acco articles to be manufactu'ed, a receiver for the tobacco mass, a part of the wall of said receiver being in the form of a Shutter closing a 'lateral inlet opening of the receiver. I e

2. In a machineifor compressing and shaping a tobacco massin correspondence to the tobacco articles to be nanufactured, the conr bination ofa receiver for the tobacco mass, an inlet opening in the :lateral wall of said receiver, a channel in front of said inlet opening, the bottom of said channel being Swingable and adapted to close in its inner position the said inlet opening.

3. In a machine for compressing and shaping a tobacco mass in correspondencc to the tobacco articles to be manufactured, the comill bination of a receiver for the tobacco mass, an inlet opening in the lateral wall of said receiver, a channel in front of said inlet open ing, the bottom of said channel being swingable and adapted to close in its inner posi tion the said inlet opening, the said receiver being movable vertically, and means for opening and closing the said bottom automatically at the vertical movement of said receiver.

4. In a machine for compressing and shaping a tobacco mass in correspondence to the tobacco articles to be manufactured, the combination of a receiver for the tobacco mass, an inlet opening in the lateral wall of said receivcr, a channel in front of said inlet opening, the bottom of said channel being Swing able and adapted to close in its inner position the said inlet opening, the said receiver being movable vertically, a frame, a support on said frame said support being adapted to hold the bottom in an inclined open position when the receiver is in its lower position, and to closethe said bottom when the receiver moves to its upper position.

5. In a machine for compressing and shaping a tobacco mass in correspondence to the. tobacco articles to be manufactured, the combination of a receiver for the tobacco mass, an inlet opening intle' lateral wall of said receiver, a channel in front of said inlet `opening, the bottom of said channel being swingable and adapted to close in its inner position the said inlet opening, the said receiver being movable vertically, a frame, a support on said frame, said support being adapted to hold the bottom in an inclined open position when the receiver is in its lower posi tion, and to close the said bottom when the receiver moves to its upper position, and a spring tending to move the bottom to its open position.

6. In a machine for compressing and shaping a tobacco mass in correspondence to the tobacco articles to be manufactured, a receiver for the tobacco mass, a part of the wall of said receiver being in the form of a shutter closing a lateral inlet opening of the receiver. the cross section of said receiver having the same shape as the tobacco article to be manufactnred, a vertically movable piston Drojecting into the upper end of said recever and adapted to compress the tobacco mass n the receiver. e

7 In a machine for compressing and shaping a quantity of tobacco mass the combnation of a vertical casing for receivng the mass, a piston within said casing, said piston and casing being movable vertically and adapted to press together the tobacco mass n the casing by such vertical movement, the casing being provided with a lateral opening, serving as inlet for the tobacco mass, and a shutter for said inlet openin 8. In a machine for compressing and-shaping a quantity of tobacco mass the combination of a vertical easing for receiving the mass, a piston within said casing, said piston and casing being movable vertically and adapted to press together the tobacco mass in the casing by such vertical movement, the casing being provided with a lateral opening, serving as inlet for the tobacco mass, a channel in front of said inlet opening, the bottom of said channel being swingable to and from said opening and adapted to close in its inner position the said inlet opening.

9. In a machine for compressing and shapingaquantityoftobacco mass the combination of a vertical casing for receiving the mass, a piston within said casing, said piston and .casing being movable vertically and adapted to press together the tobacco mass in the casingby such vertical movement, the casing being provided with a lateral opening, serving as inlet for the tobacco mass, a supply channel for said inlet opening, the bottom of said channel being pivoted at the lower edge of said inlet opening and forming a Shutter for the latter.

10. In a device for manufacturing tobacco fillers for cigars the combination of a casing for receiving aquantity of tobacco mass, the cross section of the inside of said casing corresponding to the longitudinal section of the desired tiller, a piston located within and guided by said casing, the piston and casing being movable in relation to each other and adapted to press together the tobacco mass in the casing by such relative movement, an opening n the pston gudng wall of sad casing, said opening serving as inlet for the' tobacco mass and a Shutter for said inlet opening.

11. In a device for manufacturing tobacco fillers for cigars the eombinationof a ver tical casing for receiving a quantity of tobacco mass, the cross section of the inside of said casing corresponding to the longitudinal section of the desired filler a piston located within and guided by said casing, the piston and casing being movable in relation to each other vertically and adapted to press together the tobacco mass in the casing by such relative movement, an opening in the lateral wall said casing, said opening serving as inlet for the tobacco mass, a tobacco supply channel for said inlet opening, the bottom ot which is adapted to serve as a door for %id opening.

In testimony whereof I attix my signature.

ERNST RUBEN DAHLSTROM.

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